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Orthodontics

Interceptive Orthodontic Treatment of Anterior and Posterior Crossbites Utilizing InvisalignFirst

346 - Interceptive Orthodontic Treatment of Anterior and Posterior Crossbites Utilizing Clear Aligner Therapy

Saturday, May 24, 2025

1:15 PM - 1:30 PM MDT

Has Audio

Presenting Author(s)

Mitra Marvasti-Sitterly, DMD

Pediatric Dental Resident PGY 2
University of Connecticut, Mansfield, CT
University of Connecticut
Farmington, Connecticut, United States

Co-Author(s)

GS

Gary M. Schulman, DMD

University of Connecticut

Program Director(s)

RP

Rosa E. Pelaez-Shelton, DDS, MDS

Program Director
UConn School of Dental Medicine Pediatric Dentistry
Farmington, Connecticut, United States

Abstract:

Objective:  To present the successful interceptive orthodontic treatment of an 8-year-old male presenting with an anterior crossbite on #8 and a posterior crossbite on #14 using Invisalign First. The patient exhibited Steiners Class I skeletal pattern with Witts appraisal indicating a Class III relationship. The molar and canine classifications were asymmetric: right molar and canine were Class I, while the left molar was Class III, and the left canine was Class I.

Background:  Anterior and posterior crossbites in mixed dentition can have significant functional and esthetic implications, requiring early intervention. Invisalign First, a removable clear aligner system designed for interceptive treatment in growing patients, offers an alternative to traditional fixed appliances.

Case Presentation:  An 8-year-old male presented with the chief complaint of misaligned teeth and difficulty chewing. Clinical examination and diagnostic records revealed:
• Anterior crossbite of #8.
• Posterior crossbite of #14.
• Steiners Class I skeletal pattern.
• Witts Class III appraisal.
• Right molar and canine relationships: Class I.
• Left molar relationship: Class I.
• Left canine relationship: Class I.
Interceptive orthodontic treatment was initiated using Invisalign First to address the crossbites and establish a more favorable occlusion. A series of customized aligners were designed to correct the anterior and posterior crossbites while maintaining a functional molar and canine relationship. Attachments were placed strategically to improve aligner retention and facilitate tooth movement.

Results:  Over a 12-month treatment period, the aligners successfully corrected the anterior crossbite of #8 and posterior crossbite of #14, achieving proper overjet and overbite. The molar and canine relationships were maintained on the right side and improved on the left. Treatment objectives were achieved without the need for additional appliances or adjunctive procedures.

Conclusions:  This case highlights the effectiveness of Invisalign First in managing complex mixed dentition cases with crossbites. Early intervention in growing patients using clear aligners can provide functional and esthetic improvements while minimizing the need for more invasive treatments in the future. This case underscores the importance of timely diagnosis and the potential of innovative aligner therapy in pediatric orthodontics.

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